$ timesheet help
usage: timesheet [-h]
                 {help,start,end,active,report,subjects,import,export,edit-last,abort,rename,daily-report,daily-detail,delete,version}
                 ...

Simple timesheet system.

optional arguments:
  -h, --help            show this help message and exit

Commands:

  {help,start,end,active,report,subjects,import,export,edit-last,abort,rename,daily-report,daily-detail,delete,version}
    help                Prints help for given command
    start               Starts a task
    end                 Ends a task
    active              Prints active task
    report              Print report about an subject or all subjects
    subjects            Print all subjects
    import              Import csv file with columns: subject, task, start,
                        end
    export              Export the database into csv file with columns:
                        subject, task, start, end
    edit-last           Edit last task
    abort               Aborts currently active task
    rename              Renames a subject
    daily-report        Print daily report
    daily-detail        Print detailed daily report
    delete              Deletes a subject
    version             Prints the version

$ ts start -h
usage: ts start [-h] subject ...

positional arguments:
  subject     Subject to do something about that.
  task        Task title.

optional arguments:
  -h, --help  show this help message and exit

$ timesheet help -h
usage: timesheet help [-h] [command]

positional arguments:
  command     Command to print help about that

optional arguments:
  -h, --help  show this help message and exit

$ echo "eval \"\$(register-python-argcomplete timesheet)\"" >> ~/.bashrc
$ source ~/.bashrc